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Old 10-16-2005, 07:25 PM
7"estatdef 7"estatdef is offline
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Join Date: Aug 2005
Location: Roslyn,Pa near Phila.
Posts: 406
>Well all of the caps have been replaced along with a handful of resistors and the >power transformer. Tubes have been tested and the 6BG6 has been swapped just to >doubble check it's operation. Horz sync locks nicely. I've looked at the voltages in the >horz osc and output and all are within 10% of the spec. All in all the set works great >expect for this one issue.

>Adjusting the ion trap doesn't seem to move the picture much however does brighten >it if not set properly. The focus coil T-7 does move the picture but it's skewed all the >way over to one side to try to center the picture. I'm afraid if I adjust it any more I'll >snap the neck on the crt. I don't think It's an issue of the picture not being wide >enough It just won't move over.

>A little history.
>When I got the set it had spent some time outside in the weather. Chaiss rusted >leaves,sticks,and acorns inside the cabinet. I got it home and started cleaning and >did notice that L-7 was adjusted all the was over to one side. Thought it was a bit >odd and repositions it to it's center position. After working on the set and achiving a >raster I had a 3" band down the right side of the screen. So I went back and >readjusted L-7 so it filled out most of screen. Also some serviceman had changed the >value of R-88 down to 6.8K I replaced it with a 10K but didn't change things much. In >saying all that this set has had the problem for some time.

>I was thinking I've got a bad yoke,flyback or maybe crt. but It's got me stumped!

The drive seems to be good in that it does change width some but nowhere near enough. The boost voltage is good at the cathode of the damper so I think the 6W4 is ok too. The width of the picture appears to be about right but the position isn't.
Terry

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